Which of the following is NOT considered a common concealment technique for IED placement?

The choice that is not typically regarded as a common concealment technique for IED placement is the use of discrete markings or color coding. Concealment techniques are strategies employed by individuals to hide improvised explosive devices (IEDs) from detection and surveillance. Common methods involve utilizing readily available or everyday items to disguise the IED, such as arranging it among trash, using sports equipment, or incorporating it into objects that blend into the environment.

Burial underground is a classic concealment technique, as it makes detection much more challenging, while hiding IEDs in vehicles can effectively leverage the existing structure and complexity of the vehicle itself to avoid detection.

Discrete markings or color coding, however, are not effective concealment methods as they draw attention rather than obscure the presence of the IED. Such markings would likely alert observers to the presence of a potentially hazardous item, undermining the primary goal of concealment.